Lock Nut 1.Professional nuts manufacturer 2.Any shapes are available 3.ISO 14001:2004 4.Grade:4.8 6.8 8.8 1. Lock Nut Product NameMetal Lock NutsStandardDIN,, GB, etcMaterialcarbon/alloy/stainless SteelSizeM3-M39FinishPlain ,zinc plated, painted with different colorsPackagingPlastic bag,small box,carton,wood pallet or according to your requirements The Cheap Lock Nut